The Internet, The Web and Electronic Commerce

What exactly is Javascript?

Javascript is a programming language that is used to make web pages interactive. It runs on your visitor's computer and so does not require constant downloads from your web site.

 

 

What do I need to run Javascript?

Javascript support is built right into web browsers. Provided that the visitors to your site are using web browsers that support Javascript (most do) and have Javascript enabled (it is by default) then your Javascript will run.

Do I need to learn Javascript to be able to use it?

No. There are plenty of Javascripts that have already been written that people have made available for you to plug straight into your web page. All you need to know to be able to use such scripts is how to paste the supplied code into the required places in your web page.

Applets

Applet: a small Java program that can be embedded in an HTML page. Applets differ from full-fledged Java applications in that they are not allowed to access certain resources on the local computer, such as files and serial devices (modems, printers, etc.), and are prohibited from communicating with most other computers across a network. The common rule is that an applet can only make an Internet connection to the computer from which the applet was sent.

Examples of Web-based Applets include:

• QuickTime movies
• Flash movies.
• Windows Media Player applets - used to display embedded video files in Internet Explorer (and other browsers that support the plugin).
• 3D-modelling display applets allowing a view of a model to be rotated and zoomed.
• Browser games can be applet-based, though some may develop into fully functional applications that require installation.

Filters

(1) A program that accepts a certain type of data as input, transforms it in some manner, and then outputs the transformed data. For example, a program that sorts names is a filter because it accepts the names in unsorted order, sorts them, and then outputs the sorted names.  Utilities that allow you to import or export data are also sometimes called filters.

(2) A pattern through which data is passed. Only data that matches the pattern is allowed to pass through the filter.

(3) In paint programs and image editors, a filter is an effect that can be applied to a bit map. Some filters mimic conventional photographic filters, but many transform images in unusual ways. A pointillism filter, for example, can make a digitized photograph look like a pointillistic painting.

Plug-ins

In computing, a plug-in (or plugin) is a set of software components that adds specific capabilities to a larger software application. If supported, plug-ins enable customizing the functionality of an application. For example, plug-ins are commonly used in web browsers to play video, scan for viruses, and display new file types. Well-known plug-ins examples include Adobe Flash Player and QuickTime.

 

  

Internet security

Internet security is a branch of computer security specifically related to the Internet. Its objective is to establish rules and measure to use against attacks over the Internet.

Securing Your Computer When Connected To The Internet !!!
 Internet security has become a serious issue for anyone connected to the net. Even if you don't think you have anything worth protecting on your computer, it's still important that you keep it locked down.

Even if your computer isn't used for anything critical you need to run security software such as an antivirus and a firewall.


These programs will keep your computer "hidden" from prying eyes over the internet, as well as protected from viruses and other malware that can be spread through email or other methods.

FTP - File Transfer Protocol

                               What is the File Transfer Protocol (FTP)?

In the language of the Internet, FTP refers to a network protocol responsible for transferring files from one computer to another over a TCP computer network or the Internet, which explains the origin of its name, formed as an acronym of File Transfer Protocol.

                                     What is the FTP commonly used for?

The most common use of FTP - for data transfer purposes, is of greatest help to users creating their websites on their personal computers due to the high flexibility levels it offers as far as the parameters of the computer-server connection are concerned.

                                                FTP- How does it work?

To take an advantage of FTP you must have an active Internet connection, a hosting server from/to where the files will be transferred and FTP account creation rights. All web hosting plans offered by NTC Hosting feature an integrated FTP Manager, allowing users to create several independent FTP accounts for their particular needs.

                                                            Wiki

Wiki is a piece of server software that allows users to freely create and edit Web page content using any Web browser. Wiki supports hyperlinks and has a simple text syntax for creating new pages and crosslinks between internal pages on the fly.

 

Wiki is unusual among group communication mechanisms in that it allows the organization of contributions to be edited in addition to the content itself.

 

                     URL

In computing, a Uniform Resource Locator (URL) is a Uniform Resource Identifier (URI) that specifies where an identified resource is available and the mechanism for retrieving it. In popular usage and in many technical documents and verbal discussions it is often incorrectly used as a synonym for URI.The best-known example of the use of URLs is for the addresses of web pages on the World Wide Web, such as http://www.example.com/.